Getting started with Netflix Comments is as easy as downloading the extension from the Chrome Web Store. Once you did that, whenever you watch a show on Netflix, an icon will appear in the top right corner. You can hover on the icon to show comments only when you feel like seeing them.
Comments that were written past your point in the timeline will be blurred out until you reach that point.
There’s no need to sign up. Your activity will be automatically synced to your Google account or, if you don’t have one, it will be saved locally in your browser.